The insoluble anode is used for electrolytic extraction of metal, and the metal ions in the leaching and purifying electrolyte are reduced at the cathode to produce pure metal. The biggest difficulty in electrolytic metal extraction is the selection of appropriate anode materials. The anode is required to be stable, corrosion-resistant, and can be used for a long time, and the anode process must have good electrocatalytic activity to reduce the overpotential and tank voltage of the anode reaction. Electrolytic metal extraction requires a stable anode, corrosion resistance, and good electrocatalytic activity to the anode process to reduce the overvoltage and tank voltage of the anode reaction. In recent years, coated titanium electrodes have been widely used in the field of electrolytic extraction of metals. After a massive amount of studies and tests, coated titanium anodes produced by our company can not only obtain high purity products but also have long service life and good electrocatalytic activity.